Air spring lock pin structure and mounting method

Abstract

The invention relates to an air spring lock pin structure and an installation method, an air spring lock pin comprises a front section, a middle section and a rear section, and an opening of the front section, an arc of the middle section and a circle of the rear section form a gourd-shaped structure. The device is compact in overall structure and convenient to install and operate, reliable connection between the air bag spring top plate and the support can be conveniently completed through the air spring lock pin which is uniquely designed, the device is convenient and easy to install and easy to detach, maintenance or repair can be completed very easily, conveniently and rapidly, the maintenance cost is greatly reduced, and the maintenance efficiency is improved. The problem that in the prior art, connection is achieved only through bolts and nuts is effectively solved, a wrench or a special tool is not needed, the assembly strength is low, the assembly time is short, and the assembly efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of spring mounting parts, and in particular to an air spring lock pin structure and an installation method. Background Art

[0002] At present, with the vigorous development of the automobile industry, cars are usually equipped with air springs. Air springs are a kind of spring device that uses the compressibility of air to achieve vibration reduction, and air springs have been widely used. The main components of air springs are upper cover plates, freely deformable rubber bags, support seats, and rubber elastic components made of rubber and metal. The main functions of air springs are to connect the car body and the bogie, support the weight of the car body and passengers, provide horizontal and vertical deformation of the vehicle, buffer vibration and reduce noise, etc. However, the installation of general air springs is more troublesome, and requires multiple sets of bolts, nuts and other parts to complete the installation. It is inconvenient to use, troublesome to maintain, and very difficult to disassemble.

[0003] The car air spring lock pin usually refers to a component installed in the car's air suspension system. The air spring is a shock-absorbing device that uses compressed air as an elastic medium. It can replace traditional coil springs or leaf springs to provide a more comfortable ride and better vehicle stability. The lock pin is used to fix or lock the position of the air spring to ensure that it will not move under certain conditions. For example, when the vehicle is lifted for maintenance, the lock pin can prevent safety accidents caused by the accidental release of the air spring. In short, this component is very important to ensure the normal operation and safety of the air suspension system.

[0004] The patent is disclosed as CN1749045A, and the patent name is an air spring mounting with a snap-on attachment, which discloses: comprising an elastomeric member connected to at least one support plate to define a boost chamber. The support plate has a snap-on attachment, which includes a mounting stud extending substantially vertically from the plate and three elastic fingers spaced around the periphery of the stud. When the attachment is inserted through a hole formed in a mounting bracket, the barbs disposed on the ends of the fingers are biased outwardly by the fingers to engage with the mounting bracket on which the air spring is mounted.

[0005] The air spring clip and clip connection method of this patent refers to the fixing parts when the air spring is connected to its upper bracket, rather than the components on the air spring assembly.

[0006] The patent publication number is CN204915176U, and the patent name is an air spring with a buckle, which discloses: including an air spring, a piston at the bottom of the air spring, and a plurality of buckles at the bottom of the piston, which can be buckled on a tray. Two buckles are arranged at the bottom of the piston, which are buckled on both sides of the tray respectively. The beneficial effects of the utility model are: easy to assemble, low price, and saving assembly time.

[0007] The air spring clip and clip connection method of this patent refers to the fixing parts when the air spring is connected to its upper bracket, rather than the components on the air spring assembly.

[0008] The publication number is CN205737566U, and the patent name is a kind of air spring with a buckle, which discloses: including an upper sealing plate, upper buckles are arranged on both sides of the upper surface of the upper sealing plate, a connecting rod is fixedly connected to the middle of the upper sealing plate, a lower sealing plate is arranged on the lower side of the upper sealing plate, a sealing cavity is formed between the upper sealing plate and the lower sealing plate, and an air bag is arranged in the sealing cavity, a left fixed rod and a right fixed rod are arranged in the middle of the lower sealing plate, an air inlet and an exhaust port are arranged on both sides of the left fixed rod and the right fixed rod, and the bottom of the left fixed rod and the right fixed rod are fixedly connected to a connecting seat, and lower buckles are arranged on both sides of the bottom of the connecting seat. The air spring with a buckle can make installation or disassembly more convenient, and the left fixed rod and the right fixed rod are connected to the connecting seat through threads, so that the air spring can be disassembled and some damaged parts can be replaced without replacing the whole part, which can reduce costs, and the air spring has a simple structure and is easy to use.

[0009] The air spring lock pin and lock pin connection method of this patent refer to the fixing parts when the air spring is connected to its upper bracket, rather than the components on the air spring assembly.

[0010] At present, the connection method between air springs and their upper brackets at home and abroad is mostly bolt and nut connection, that is, there are welded studs on the air spring, which pass through the upper bracket of the air spring, and the nuts connect the studs to connect the air spring and the upper bracket together.

[0011] The connection method of bolts and nuts requires a wrench or special tools to assemble and tighten, which has high assembly strength and a long assembly cycle, and is not conducive to improving assembly efficiency.

[0012] Therefore, it is very necessary to study an airbag connection method with simple structure and convenient disassembly. Summary of the invention

[0013] Based on this, it is necessary to provide an air spring lock pin structure and installation method to address the problems in the prior art, so that a special air spring lock pin structure is designed, which can easily complete the installation and disassembly work, facilitate after-sales maintenance and other operations, and have low maintenance costs.

[0014] The technical solution of the present invention is:

[0015] An air spring lock pin structure comprises a front section, a middle section and a rear section. The opening of the front section, the arc of the middle section and the circle of the rear section form a gourd-shaped structure.

[0016] Its further technical solution is:

[0017] In one embodiment, the air spring lock pin is an integrated structure and is formed by bending a bar stock.

[0018] In one of the embodiments, a vehicle frame is further included, a bracket is mounted on the frame via fasteners, and the bracket is connected to the airbag spring top plate via an air spring locking pin.

[0019] In one embodiment, the frame includes longitudinal beams and transverse beams.

[0020] In one of the embodiments, two spaced cylindrical structures are welded to the upper surface of the airbag spring top plate, a single cylindrical structure is provided with a hole, and the air spring locking pin passes through the hole to connect the airbag spring top plate to the bracket.

[0021] In one embodiment, the bracket is a right-angle structure.

[0022] In one embodiment, one end of the bracket is connected to the vehicle frame, and the other end of the bracket is connected to the top plate of the airbag spring.

[0023] In one embodiment, the bracket is provided with a circular mounting hole, and the circular mounting hole matches the cylindrical structure.

[0024] In one embodiment, the diameter of the circular mounting hole is larger than the outer diameter of the cylindrical structure.

[0025] A method for installing an air spring lock pin structure,

[0026] The following operation procedures are included:

[0027] Prepare the vehicle frame, airbag spring top plate, air spring locking pin and bracket; connect the vehicle frame and bracket with bolts, and put the circular mounting hole on the bracket on the cylindrical structure of the airbag spring top plate. Then, pass the air spring locking pin through the hole on the cylindrical structure to complete the connection between the airbag upper bracket and the airbag spring top plate; check whether the air spring locking pin is in place and whether the bolts are tightened.

[0028] The beneficial effects of the present invention are:

[0029] The overall structure of the present invention is compact and easy to install and operate. Through the uniquely designed air spring lock pin, a reliable connection between the airbag spring top plate and the bracket can be easily completed. The installation and disassembly are convenient and simple. During maintenance or repair, it can be completed very simply and quickly, which greatly reduces the maintenance cost.

[0030] The present invention effectively solves the problems in the prior art. The traditional connection method between the air spring and the upper bracket (upper cover plate) is mostly a bolt and nut connection method. The upper end of the air spring is connected to the frame through the upper bracket, and the lower end of the air spring is connected to the rear axle through the bracket arm, which is used to transfer the load between the frame and the rear axle. When the air spring is inflated, the top plate of the air spring is close to the upper bracket, and the load from the frame is transmitted to the top plate of the air spring through the upper bracket, and then the load is transmitted to the rear axle; when the top plate of the air spring is close to the upper bracket, the bolts and nuts used to connect the air spring and the upper bracket are under little force or even no force. Therefore, the connecting bolts and nuts play more of a positioning and fixing role rather than a load-bearing role. In addition, when assembling bolts and nuts, in order to ensure the reliability of the connection, a wrench or special tool must be used, which has a high assembly strength and a long assembly time, which is not conducive to improving assembly efficiency.

[0031] The gas spring lock pin described in the present invention is gourd-shaped as a whole, formed by bending a rod, and consists of three parts, namely, an opening at the front section, an arc in the middle section, and a circle at the rear end. It has a simple structure, is easy to manufacture, and has low cost.

[0032] The top plate of the airbag spring of the present invention is provided with a cylindrical structure, a hole is opened on the cylindrical structure, and the cylindrical structure is assembled in cooperation with the gas spring lock pin.

[0033] The connection method between the airbag spring top plate and its upper bracket described in the present invention through the air spring lock pin of the present invention is a lock pin connection method, which is convenient for installation and disassembly, convenient for after-sales maintenance and other operations, and has low maintenance costs.

[0034] The connection method of the present invention greatly reduces the assembly strength, greatly improves the assembly efficiency, and also greatly reduces the labor intensity of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic structural diagram of the air spring lock pin of the present invention.

[0036] Figure 2 It is the installation schematic diagram of the present invention.

[0037] Figure 3 for Figure 2 A partial enlarged view of part A in the middle.

[0038] Figure 4 It is a cross-sectional view of the top plate of the airbag spring of the present invention.

[0039] Figure 5 It is a structural schematic diagram of the airbag spring top plate of the present invention.

[0040] in:

[0041] 1. Frame; 2. Airbag spring top plate; 3. Air spring lock pin; 4. Bracket;

[0042] 201, cylindrical structure; 202, hole;

[0043] 301, front part; 302, middle part; 303, back part. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0050] See also Figure 1 , Figure 1 The specific structure of the air spring lock pin 3 in one embodiment of the present invention is shown. One embodiment of the present invention provides an air spring lock pin structure. The structure of the air spring lock pin 3 is:

[0051] It includes three parts, namely a front section 301, a middle section 302 and a rear section 303. Specifically, the opening of the front section 301, the arc of the middle section 302 and the circle of the rear section 303 form a gourd-shaped structure.

[0052] The air spring lock pin 3 is an integrated structure and is formed by bending a bar stock, and has a simple structure, is easy to manufacture, and has a low cost.

[0053] The installation structure of the air spring lock pin 3 includes a vehicle frame 1, on which a bracket 4 on the airbag is installed through fasteners, and the bracket 4 is connected to the airbag spring top plate 2 through the air spring lock pin 3. This installation method is simple and fast, and has good connection reliability.

[0054] like Figure 2 and Figure 3 As shown, the frame 1 includes a longitudinal beam and a cross beam. The frame 1 adopts a welded structure and has high overall strength.

[0055] like Figure 2 , Figure 3 and Figure 4 As shown, two spaced cylindrical structures 201 are welded on the upper surface of the airbag spring top plate 2 , and a hole 202 is opened on a single cylindrical structure 201 . The air spring lock pin 3 passes through the hole 202 to connect the airbag spring top plate 2 with the bracket 4 .

[0056] like Figure 2 and Figure 3 As shown, the bracket 4 is in a right-angle structure, which makes it easier to install and increases the strength of the structure.

[0057] like Figure 2 and Figure 3 As shown, one end of the bracket 4 is connected to the vehicle frame 1, and the other end of the bracket 4 is connected to the airbag spring top plate 2, and the connection is simple and fast.

[0058] like Figure 2 and Figure 3 As shown, the bracket 4 is provided with a circular mounting hole, which matches the cylindrical structure 201, thus ensuring the convenience of installation and disassembly.

[0059] like Figure 2 and Figure 3 As shown, the diameter of the circular mounting hole is larger than the outer diameter of the cylindrical structure 201 .

[0060] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the installation method of the air spring lock pin structure of this embodiment is as follows:

[0061] The following operation procedures are included:

[0062] Preparation:

[0063] Prepare the vehicle frame 1, the air bag spring top plate 2, the air spring lock pin 3 and the bracket 4;

[0064] Installation work:

[0065] The frame 1 is connected to the bracket 4 by bolts, and the circular mounting hole on the bracket 4 is sleeved on the cylindrical structure 201 of the airbag spring top plate 2. Then, the air spring lock pin 3 is passed through the hole 202 on the cylindrical structure 201, and the connection work between the airbag upper bracket 4 and the airbag spring top plate 2 is completed; the installation is completed:

[0066] Check whether the air spring lock pin 3 is in place and the bolts are tightened;

[0067] Finish.

[0068] The following is a detailed description of the various structural components and functions:

[0069] The specific description of the air spring lock pin 3 described in this embodiment is as follows:

[0070] like Figure 1 As shown, the air spring lock pin 3 described in this embodiment is gourd-shaped as a whole and is an integrated structure. It is formed by bending rod material, is very convenient to process, and has very low cost. The air spring lock pin 3 is composed of three parts, namely, an opening of the front section 301, an arc of the middle section 302 and a circle of the rear section 303. The opening of the front section 301, the arc of the middle section 302 and the circle of the rear section 303 form a gourd shape.

[0071] like Figure 1 As shown, the opening of the front section 301 described in this embodiment is an opening that opens forward, with the largest opening at the front side, gradually narrowing toward the rear side, forming a certain slope, and finally intersecting with the arc of the middle section 302 to form a constriction, and the minimum width of the constriction is 0 to 1 mm. The opening described above has a certain slope, and during assembly, it is easy to assemble into the hole 202 of the cylindrical structure 201 of the airbag spring top plate 2, has a good guiding effect, and can be inserted into the hole 202 very conveniently; the narrowest part of the constriction described above, after assembly, ensures that the air spring lock pin 3 cannot easily fall out of the hole 202 of the cylindrical structure 201 of the airbag spring top plate 2, and at the same time ensures normal disassembly, and its installation reliability is very good, see specifically Figure 1 , Figure 2 and Figure 3 shown.

[0072] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the arc of the middle section 302 described in this embodiment is not a complete semicircle, and the diameter of the semicircle is slightly larger than the diameter of the cylindrical structure 201 of the airbag spring top plate 2 to ensure normal assembly.

[0073] In this embodiment, after the cylindrical structure 201 of the airbag spring top plate 2 is assembled with the air spring lock pin 3, it is ensured that the airbag spring top plate 2 can be clamped so that it cannot be separated from the airbag upper bracket 4. Figure 2 and Figure 3 As shown, the assembly is convenient and the connection reliability is very good.

[0074] The circle of the rear section 303 described in this embodiment is an incomplete circle. The front side of the circle is connected to the arc of the middle section 302 through an arc to form a constriction. The width of the constriction is smaller than the diameter of the cylindrical opening of the airbag spring top plate 2. After assembly, it is ensured that the airbag spring top plate 2 can be clamped so that it cannot be separated from the airbag upper bracket 4. Figure 1 , Figure 2 and Figure 3 As shown, the diameter of the rear end circle is larger, which is convenient for handheld assembly, facilitates the work of the operator, and also improves the assembly efficiency.

[0075] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the welded cylindrical structure 201 on the airbag spring top plate 2 is provided with a hole 202 for assembling the air spring lock pin 3. The aperture of the hole 202 is set in advance (depending on the actual application occasion) and can fully match the air spring lock pin 3 and ensure the stable installation of the air spring lock pin 3. Figure 4 As shown, when necessary, the hole 202 can also be set as a threaded hole, or a notch can be set inside the hole 202, and the notch can be matched with the air spring lock pin 3 to enhance the connection reliability between the two.

[0076] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the airbag upper bracket 4 as described above adopts a right-angled structure, one right-angled side is directly connected to the frame 1 by bolts and nuts, and a circular mounting hole is opened on the other right-angled side. The circular mounting hole matches the cylindrical structure 201 of the airbag spring top plate 2. The diameter of the circular mounting hole is slightly larger than the diameter of the cylindrical structure 201, which is convenient for assembly. The diameter cannot be too large, otherwise it will cause inaccurate installation and positioning of the airbag spring top plate 2. In this way, the circular mounting hole can be very conveniently covered on the cylindrical structure 201, and then locked by the air spring lock pin 3. For details, see Figure 2 and Figure 5 shown.

[0077] The specific description of the lock pin connection method described in this embodiment is as follows:

[0078] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the process mainly includes the following: first, the bracket 4 on the airbag is connected to the frame 1 by bolts, which can be used to transfer the vertical load applied by the frame 1 to the rear axle. Since the bracket 4 has a circular mounting hole and the airbag spring top plate 2 has a cylindrical structure, the air spring lock pin 3 passes through the hole 202 on the airbag spring top plate 2, so that the airbag bracket 4 and the airbag spring top plate 2 can be conveniently and quickly reliably connected to ensure that the airbag spring top plate 2 and the airbag bracket 4 are not separated, meeting the use requirements, and also avoiding the combined assembly work of multiple sets of bolts and nuts required in the prior art, greatly simplifying the installation and disassembly steps, and greatly improving the connection reliability.

[0079] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the air spring lock pin 3 used in this embodiment connects the airbag spring top plate 2 and the airbag upper bracket 4 together, which is called a lock pin connection method.

[0080] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this embodiment adopts a locking pin connection method to replace the traditional bolt and nut connection method, which can greatly reduce the assembly tools and reduce the labor intensity of workers, thereby improving the assembly efficiency, bringing very good installation reliability, and is also very convenient for disassembly, which greatly facilitates maintenance and greatly reduces costs.

[0081] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, although the structure of the air spring lock pin 3 described in this embodiment is integrated, its assembly performance is very strong in disassembly, which is very convenient for after-sales maintenance, with low maintenance cost and very low labor intensity for operators.

[0082] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the overall structure of this embodiment is compact and easy to install and operate. Through the uniquely designed air spring lock pin 3, a reliable connection between the airbag spring top plate 2 and the bracket 4 can be easily completed. The installation and disassembly are convenient and simple. During maintenance or repair, it can be completed very easily and quickly, which greatly reduces the maintenance cost.

[0083] This embodiment effectively solves the problems in the prior art. The traditional connection method between the air spring and the upper bracket (upper cover plate) is mostly a bolt and nut connection method. The upper end of the air spring is connected to the frame 1 through the upper bracket 4, and the lower end of the air spring is connected to the rear axle through the bracket arm, which is used to transfer the load between the frame 1 and the rear axle. When the air spring is inflated, the airbag spring top plate 2 is close to the upper bracket 4, and the load from the frame 1 is transmitted to the air spring top plate through the upper bracket, and then the load is transmitted to the rear axle; when the airbag spring top plate 2 is close to the upper bracket 4, the bolts and nuts used to connect the air spring and the upper bracket 4 are very small or even unstressed. Therefore, the connecting bolts and nuts play more of a positioning and fixing role rather than a load-bearing role. In addition, when assembling bolts and nuts, in order to ensure the reliability of the connection, a wrench or special tool must be used, which has a high assembly strength and a long assembly time, which is not conducive to improving assembly efficiency.

[0084] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the gas spring lock pin described in this embodiment is gourd-shaped as a whole, formed by bending rod material, and consists of three major parts, namely, an opening of the front section 301, an arc of the middle section 302, and a circle of the rear section 303. It has a simple structure, is easy to manufacture, and has low cost.

[0085] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the airbag spring top plate 2 described in this embodiment has a cylindrical structure 201, and a hole 202 is opened on the cylindrical structure 201, which is assembled with the air spring lock pin 3, and is very convenient to install and disassemble.

[0086] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the connection method between the airbag spring top plate 2 and its upper bracket 4 described in this embodiment is a locking pin connection method through the uniquely designed air spring locking pin 3, which is easy to install and disassemble, convenient for after-sales maintenance and other operations, and has low maintenance costs.

[0087] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the connection method of this embodiment greatly reduces the assembly strength, greatly improves the assembly efficiency, and also greatly reduces the labor intensity of the operators.

[0088] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An air spring lock pin structure, characterized in that: The air spring lock pin comprises a front section, a middle section and a rear section, and the opening of the front section, the arc of the middle section and the circle of the rear section form a gourd-shaped structure.

2. The air spring lock pin structure according to claim 1, characterized in that: The air spring lock pin is an integrated structure and is formed by bending a bar stock.

3. The air spring lock pin structure according to claim 1, characterized in that: It also includes a vehicle frame, on which a bracket is installed via a fastener, and the bracket is connected to the airbag spring top plate via an air spring locking pin.

4. The air spring lock pin structure according to claim 3, characterized in that: The vehicle frame includes longitudinal beams and transverse beams.

5. The air spring lock pin structure according to claim 4, characterized in that: Two spaced cylindrical structures are welded on the upper surface of the airbag spring top plate, a single cylindrical structure is provided with a hole, and the air spring locking pin passes through the hole so that the airbag spring top plate is connected to the bracket.

6. The air spring lock pin structure according to claim 5, characterized in that: The bracket has a right-angle structure.

7. The air spring lock pin structure according to claim 6, characterized in that: One end of the bracket is connected to the vehicle frame, and the other end of the bracket is connected to the top plate of the airbag spring.

8. The air spring lock pin structure according to claim 7, characterized in that: The bracket is provided with a circular mounting hole, which matches the cylindrical structure.

9. The air spring lock pin structure according to claim 8, characterized in that: The diameter of the circular mounting hole is larger than the outer diameter of the cylindrical structure.

10. A method for installing an air spring lock pin structure, characterized in that: The following steps are involved: Prepare the frame, air bag spring top plate, air spring lock pin and bracket; The frame and the bracket are connected by bolts, and the circular mounting hole on the bracket is sleeved on the cylindrical structure of the airbag spring top plate. The air spring locking pin is passed through the hole on the cylindrical structure to complete the connection between the airbag upper bracket and the airbag spring top plate; Check that the air spring lock pin is in place and the bolts are tight.

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